./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-multidimensional/add-3-n-u.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4af5144-454e-463a-a8d4-d82b7c6c538a/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4af5144-454e-463a-a8d4-d82b7c6c538a/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4af5144-454e-463a-a8d4-d82b7c6c538a/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4af5144-454e-463a-a8d4-d82b7c6c538a/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-multidimensional/add-3-n-u.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4af5144-454e-463a-a8d4-d82b7c6c538a/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4af5144-454e-463a-a8d4-d82b7c6c538a/bin/utaipan-g80aRyZoba --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash efbd812580893a7521723358e51d4f43c4b930b57b026212f5a7d5f447f3e0f8 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 02:37:31,406 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:37:31,408 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:37:31,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:37:31,445 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:37:31,449 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:37:31,451 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:37:31,455 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:37:31,457 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:37:31,463 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:37:31,464 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:37:31,466 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:37:31,467 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:37:31,470 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:37:31,471 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:37:31,475 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:37:31,478 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:37:31,479 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:37:31,480 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:37:31,485 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:37:31,488 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:37:31,491 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:37:31,492 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:37:31,493 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:37:31,497 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:37:31,498 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:37:31,498 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:37:31,499 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:37:31,500 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:37:31,501 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:37:31,501 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:37:31,502 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:37:31,503 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:37:31,507 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:37:31,508 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:37:31,508 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:37:31,509 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:37:31,509 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:37:31,509 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:37:31,510 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:37:31,511 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:37:31,512 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4af5144-454e-463a-a8d4-d82b7c6c538a/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-22 02:37:31,541 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:37:31,545 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:37:31,546 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:37:31,546 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:37:31,547 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:37:31,547 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:37:31,547 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:37:31,547 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:37:31,548 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:37:31,548 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:37:31,549 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:37:31,549 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:37:31,550 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:37:31,550 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:37:31,550 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:37:31,550 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:37:31,550 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:37:31,551 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:37:31,551 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:37:31,552 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 02:37:31,552 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:37:31,552 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 02:37:31,552 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:37:31,553 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:37:31,553 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:37:31,553 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:37:31,554 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 02:37:31,554 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:37:31,554 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:37:31,554 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:37:31,555 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:37:31,555 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:37:31,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:37:31,556 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:37:31,556 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:37:31,556 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:37:31,556 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:37:31,556 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:37:31,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:37:31,557 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:37:31,557 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:37:31,557 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4af5144-454e-463a-a8d4-d82b7c6c538a/bin/utaipan-g80aRyZoba/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4af5144-454e-463a-a8d4-d82b7c6c538a/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> efbd812580893a7521723358e51d4f43c4b930b57b026212f5a7d5f447f3e0f8 [2022-11-22 02:37:31,907 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:37:31,941 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:37:31,943 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:37:31,945 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:37:31,945 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:37:31,946 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4af5144-454e-463a-a8d4-d82b7c6c538a/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/array-multidimensional/add-3-n-u.c [2022-11-22 02:37:34,943 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:37:35,174 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:37:35,175 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4af5144-454e-463a-a8d4-d82b7c6c538a/sv-benchmarks/c/array-multidimensional/add-3-n-u.c [2022-11-22 02:37:35,182 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4af5144-454e-463a-a8d4-d82b7c6c538a/bin/utaipan-g80aRyZoba/data/2776ccaed/722f5e5dfb304987a387f18d4168988a/FLAG38a408b97 [2022-11-22 02:37:35,199 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4af5144-454e-463a-a8d4-d82b7c6c538a/bin/utaipan-g80aRyZoba/data/2776ccaed/722f5e5dfb304987a387f18d4168988a [2022-11-22 02:37:35,202 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:37:35,205 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:37:35,210 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:37:35,210 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:37:35,215 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:37:35,216 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:37:35" (1/1) ... [2022-11-22 02:37:35,217 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27c98cbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:37:35, skipping insertion in model container [2022-11-22 02:37:35,218 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:37:35" (1/1) ... [2022-11-22 02:37:35,225 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:37:35,246 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:37:35,387 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4af5144-454e-463a-a8d4-d82b7c6c538a/sv-benchmarks/c/array-multidimensional/add-3-n-u.c[321,334] [2022-11-22 02:37:35,410 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:37:35,420 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:37:35,432 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4af5144-454e-463a-a8d4-d82b7c6c538a/sv-benchmarks/c/array-multidimensional/add-3-n-u.c[321,334] [2022-11-22 02:37:35,446 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:37:35,466 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:37:35,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:37:35 WrapperNode [2022-11-22 02:37:35,467 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:37:35,468 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:37:35,468 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:37:35,469 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:37:35,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:37:35" (1/1) ... [2022-11-22 02:37:35,508 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:37:35" (1/1) ... [2022-11-22 02:37:35,545 INFO L138 Inliner]: procedures = 14, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 118 [2022-11-22 02:37:35,546 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:37:35,546 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:37:35,547 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:37:35,547 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:37:35,559 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:37:35" (1/1) ... [2022-11-22 02:37:35,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:37:35" (1/1) ... [2022-11-22 02:37:35,573 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:37:35" (1/1) ... [2022-11-22 02:37:35,573 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:37:35" (1/1) ... [2022-11-22 02:37:35,578 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:37:35" (1/1) ... [2022-11-22 02:37:35,597 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:37:35" (1/1) ... [2022-11-22 02:37:35,599 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:37:35" (1/1) ... [2022-11-22 02:37:35,600 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:37:35" (1/1) ... [2022-11-22 02:37:35,602 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:37:35,603 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:37:35,603 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:37:35,603 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:37:35,604 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:37:35" (1/1) ... [2022-11-22 02:37:35,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:37:35,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4af5144-454e-463a-a8d4-d82b7c6c538a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:37:35,648 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4af5144-454e-463a-a8d4-d82b7c6c538a/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:37:35,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4af5144-454e-463a-a8d4-d82b7c6c538a/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:37:35,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:37:35,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 02:37:35,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 02:37:35,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 02:37:35,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:37:35,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:37:35,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 02:37:35,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 02:37:35,792 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:37:35,794 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:37:36,071 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:37:36,119 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:37:36,119 INFO L300 CfgBuilder]: Removed 9 assume(true) statements. [2022-11-22 02:37:36,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:37:36 BoogieIcfgContainer [2022-11-22 02:37:36,122 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:37:36,125 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:37:36,125 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:37:36,129 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:37:36,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:37:35" (1/3) ... [2022-11-22 02:37:36,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74f0c74b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:37:36, skipping insertion in model container [2022-11-22 02:37:36,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:37:35" (2/3) ... [2022-11-22 02:37:36,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74f0c74b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:37:36, skipping insertion in model container [2022-11-22 02:37:36,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:37:36" (3/3) ... [2022-11-22 02:37:36,133 INFO L112 eAbstractionObserver]: Analyzing ICFG add-3-n-u.c [2022-11-22 02:37:36,155 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:37:36,155 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 02:37:36,213 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:37:36,218 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@62f12488, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:37:36,218 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 02:37:36,233 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:37:36,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-22 02:37:36,260 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:37:36,261 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:37:36,261 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:37:36,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:37:36,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1242475547, now seen corresponding path program 1 times [2022-11-22 02:37:36,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:37:36,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371007643] [2022-11-22 02:37:36,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:37:36,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:37:36,423 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 02:37:36,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [27106408] [2022-11-22 02:37:36,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:37:36,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:37:36,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4af5144-454e-463a-a8d4-d82b7c6c538a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:37:36,430 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4af5144-454e-463a-a8d4-d82b7c6c538a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:37:36,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4af5144-454e-463a-a8d4-d82b7c6c538a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 02:37:36,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:37:36,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 02:37:36,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:37:36,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:37:36,668 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:37:36,668 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:37:36,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371007643] [2022-11-22 02:37:36,669 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 02:37:36,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27106408] [2022-11-22 02:37:36,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27106408] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:37:36,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:37:36,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:37:36,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088382670] [2022-11-22 02:37:36,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:37:36,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:37:36,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:37:36,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:37:36,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:37:36,748 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:37:36,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:37:36,836 INFO L93 Difference]: Finished difference Result 29 states and 47 transitions. [2022-11-22 02:37:36,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:37:36,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-22 02:37:36,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:37:36,848 INFO L225 Difference]: With dead ends: 29 [2022-11-22 02:37:36,849 INFO L226 Difference]: Without dead ends: 17 [2022-11-22 02:37:36,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:37:36,859 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:37:36,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 18 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:37:36,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-22 02:37:36,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-11-22 02:37:36,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:37:36,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 23 transitions. [2022-11-22 02:37:36,901 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 23 transitions. Word has length 8 [2022-11-22 02:37:36,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:37:36,901 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 23 transitions. [2022-11-22 02:37:36,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:37:36,902 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 23 transitions. [2022-11-22 02:37:36,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-22 02:37:36,903 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:37:36,903 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:37:36,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4af5144-454e-463a-a8d4-d82b7c6c538a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 02:37:37,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4af5144-454e-463a-a8d4-d82b7c6c538a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-22 02:37:37,121 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:37:37,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:37:37,127 INFO L85 PathProgramCache]: Analyzing trace with hash 103004432, now seen corresponding path program 1 times [2022-11-22 02:37:37,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:37:37,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596058907] [2022-11-22 02:37:37,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:37:37,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:37:37,144 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 02:37:37,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1838346979] [2022-11-22 02:37:37,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:37:37,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:37:37,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4af5144-454e-463a-a8d4-d82b7c6c538a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:37:37,166 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4af5144-454e-463a-a8d4-d82b7c6c538a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:37:37,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4af5144-454e-463a-a8d4-d82b7c6c538a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 02:37:37,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:37:37,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 02:37:37,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:37:37,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:37:37,315 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:37:37,316 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:37:37,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596058907] [2022-11-22 02:37:37,316 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 02:37:37,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838346979] [2022-11-22 02:37:37,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838346979] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:37:37,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:37:37,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:37:37,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833564527] [2022-11-22 02:37:37,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:37:37,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:37:37,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:37:37,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:37:37,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:37:37,320 INFO L87 Difference]: Start difference. First operand 15 states and 23 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:37:37,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:37:37,429 INFO L93 Difference]: Finished difference Result 40 states and 63 transitions. [2022-11-22 02:37:37,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 02:37:37,431 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-22 02:37:37,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:37:37,433 INFO L225 Difference]: With dead ends: 40 [2022-11-22 02:37:37,433 INFO L226 Difference]: Without dead ends: 27 [2022-11-22 02:37:37,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:37:37,437 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 48 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:37:37,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 11 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:37:37,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-22 02:37:37,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 18. [2022-11-22 02:37:37,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:37:37,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 26 transitions. [2022-11-22 02:37:37,450 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 26 transitions. Word has length 10 [2022-11-22 02:37:37,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:37:37,451 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 26 transitions. [2022-11-22 02:37:37,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:37:37,451 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 26 transitions. [2022-11-22 02:37:37,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-22 02:37:37,452 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:37:37,453 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:37:37,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4af5144-454e-463a-a8d4-d82b7c6c538a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 02:37:37,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4af5144-454e-463a-a8d4-d82b7c6c538a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-22 02:37:37,659 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:37:37,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:37:37,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1848574842, now seen corresponding path program 1 times [2022-11-22 02:37:37,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:37:37,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733758644] [2022-11-22 02:37:37,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:37:37,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:37:37,677 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 02:37:37,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [70909735] [2022-11-22 02:37:37,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:37:37,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:37:37,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4af5144-454e-463a-a8d4-d82b7c6c538a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:37:37,679 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4af5144-454e-463a-a8d4-d82b7c6c538a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:37:37,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4af5144-454e-463a-a8d4-d82b7c6c538a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 02:37:37,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:37:37,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 02:37:37,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:37:37,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:37:37,816 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:37:37,817 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:37:37,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733758644] [2022-11-22 02:37:37,817 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 02:37:37,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70909735] [2022-11-22 02:37:37,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70909735] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:37:37,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:37:37,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:37:37,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485253307] [2022-11-22 02:37:37,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:37:37,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:37:37,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:37:37,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:37:37,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:37:37,820 INFO L87 Difference]: Start difference. First operand 18 states and 26 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:37:37,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:37:37,933 INFO L93 Difference]: Finished difference Result 43 states and 63 transitions. [2022-11-22 02:37:37,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 02:37:37,934 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-22 02:37:37,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:37:37,935 INFO L225 Difference]: With dead ends: 43 [2022-11-22 02:37:37,936 INFO L226 Difference]: Without dead ends: 27 [2022-11-22 02:37:37,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:37:37,940 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 22 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:37:37,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 12 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:37:37,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-22 02:37:37,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 21. [2022-11-22 02:37:37,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.45) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:37:37,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 29 transitions. [2022-11-22 02:37:37,949 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 29 transitions. Word has length 12 [2022-11-22 02:37:37,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:37:37,949 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 29 transitions. [2022-11-22 02:37:37,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:37:37,950 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 29 transitions. [2022-11-22 02:37:37,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-22 02:37:37,950 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:37:37,951 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:37:37,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4af5144-454e-463a-a8d4-d82b7c6c538a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-22 02:37:38,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4af5144-454e-463a-a8d4-d82b7c6c538a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:37:38,157 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:37:38,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:37:38,158 INFO L85 PathProgramCache]: Analyzing trace with hash 2114319717, now seen corresponding path program 1 times [2022-11-22 02:37:38,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:37:38,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975164725] [2022-11-22 02:37:38,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:37:38,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:37:38,183 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 02:37:38,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1367441500] [2022-11-22 02:37:38,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:37:38,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:37:38,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4af5144-454e-463a-a8d4-d82b7c6c538a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:37:38,197 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4af5144-454e-463a-a8d4-d82b7c6c538a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:37:38,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4af5144-454e-463a-a8d4-d82b7c6c538a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 02:37:38,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:37:38,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-22 02:37:38,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:37:38,320 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:37:38,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:37:38,350 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:37:38,351 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:37:38,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975164725] [2022-11-22 02:37:38,351 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 02:37:38,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367441500] [2022-11-22 02:37:38,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367441500] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:37:38,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [251126168] [2022-11-22 02:37:38,371 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-22 02:37:38,372 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:37:38,375 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:37:38,385 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:37:38,385 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:37:38,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:37:38,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:37:38,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:37:38,724 INFO L321 Elim1Store]: treesize reduction 185, result has 22.9 percent of original size [2022-11-22 02:37:38,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 49 treesize of output 81 [2022-11-22 02:37:38,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:37:38,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:37:38,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:37:38,988 INFO L321 Elim1Store]: treesize reduction 190, result has 19.1 percent of original size [2022-11-22 02:37:38,988 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 60 treesize of output 93 [2022-11-22 02:37:39,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:37:39,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:37:39,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 69 [2022-11-22 02:37:39,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:37:39,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:37:39,514 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:39,557 INFO L321 Elim1Store]: treesize reduction 162, result has 16.5 percent of original size [2022-11-22 02:37:39,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 480 treesize of output 448 [2022-11-22 02:37:39,742 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:39,760 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:37:39,761 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:37:39,970 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:39,987 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:37:39,988 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:37:40,055 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:40,071 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:37:40,072 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:37:40,126 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:40,144 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:37:40,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:37:40,273 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:40,297 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:37:40,298 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:37:40,339 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:40,357 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:37:40,357 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:37:40,526 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:40,542 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:37:40,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:37:40,583 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:40,603 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:37:40,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:37:40,611 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:37:40,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [251126168] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:37:40,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-22 02:37:40,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 10 [2022-11-22 02:37:40,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520666797] [2022-11-22 02:37:40,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:37:40,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:37:40,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:37:40,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:37:40,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-11-22 02:37:40,861 INFO L87 Difference]: Start difference. First operand 21 states and 29 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:37:40,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:37:40,997 INFO L93 Difference]: Finished difference Result 42 states and 53 transitions. [2022-11-22 02:37:40,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:37:40,998 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-22 02:37:40,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:37:41,000 INFO L225 Difference]: With dead ends: 42 [2022-11-22 02:37:41,000 INFO L226 Difference]: Without dead ends: 33 [2022-11-22 02:37:41,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-11-22 02:37:41,004 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 12 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:37:41,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 6 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:37:41,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-22 02:37:41,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 22. [2022-11-22 02:37:41,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 21 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:37:41,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2022-11-22 02:37:41,026 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 13 [2022-11-22 02:37:41,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:37:41,027 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2022-11-22 02:37:41,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:37:41,027 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2022-11-22 02:37:41,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-22 02:37:41,029 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:37:41,029 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:37:41,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4af5144-454e-463a-a8d4-d82b7c6c538a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-22 02:37:41,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4af5144-454e-463a-a8d4-d82b7c6c538a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:37:41,237 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:37:41,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:37:41,237 INFO L85 PathProgramCache]: Analyzing trace with hash -475134270, now seen corresponding path program 1 times [2022-11-22 02:37:41,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:37:41,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077107883] [2022-11-22 02:37:41,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:37:41,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:37:41,255 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 02:37:41,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [623911360] [2022-11-22 02:37:41,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:37:41,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:37:41,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4af5144-454e-463a-a8d4-d82b7c6c538a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:37:41,264 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4af5144-454e-463a-a8d4-d82b7c6c538a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:37:41,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4af5144-454e-463a-a8d4-d82b7c6c538a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-22 02:37:41,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:37:41,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-22 02:37:41,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:37:41,391 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-22 02:37:41,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:37:41,423 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-22 02:37:41,423 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:37:41,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077107883] [2022-11-22 02:37:41,424 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 02:37:41,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623911360] [2022-11-22 02:37:41,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623911360] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:37:41,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [149726] [2022-11-22 02:37:41,434 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-22 02:37:41,434 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:37:41,435 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:37:41,435 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:37:41,435 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:37:41,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:37:41,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:37:41,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:37:41,624 INFO L321 Elim1Store]: treesize reduction 190, result has 19.1 percent of original size [2022-11-22 02:37:41,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 60 treesize of output 93 [2022-11-22 02:37:41,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:37:41,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:37:41,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:37:41,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 18 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 61 [2022-11-22 02:37:41,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:37:41,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:37:41,756 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 61 [2022-11-22 02:37:41,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:37:41,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:37:41,940 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:41,976 INFO L321 Elim1Store]: treesize reduction 162, result has 16.5 percent of original size [2022-11-22 02:37:41,978 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 480 treesize of output 448 [2022-11-22 02:37:42,094 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:42,109 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:37:42,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:37:42,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:37:42,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:37:42,353 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:42,394 INFO L321 Elim1Store]: treesize reduction 158, result has 18.6 percent of original size [2022-11-22 02:37:42,395 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 305 treesize of output 285 [2022-11-22 02:37:42,484 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:42,499 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:37:42,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:37:42,574 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:42,588 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-22 02:37:42,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 45 [2022-11-22 02:37:42,635 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:42,651 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:37:42,652 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:37:42,782 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:42,796 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:37:42,797 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:37:42,850 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:42,864 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:37:42,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:37:42,922 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:42,936 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:37:42,937 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:37:42,978 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:42,992 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:37:42,993 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:37:43,049 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:43,064 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:37:43,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:37:43,110 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:43,124 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:37:43,125 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:37:43,228 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:43,243 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-22 02:37:43,244 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 45 [2022-11-22 02:37:43,298 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:43,312 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:37:43,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:37:43,385 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:43,399 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-22 02:37:43,399 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 45 [2022-11-22 02:37:43,449 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:43,463 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:37:43,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:37:43,494 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:43,509 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:37:43,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:37:43,625 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:43,626 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:43,668 INFO L321 Elim1Store]: treesize reduction 54, result has 51.4 percent of original size [2022-11-22 02:37:43,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 79 [2022-11-22 02:37:43,737 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:43,738 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:43,784 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-22 02:37:43,785 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-22 02:37:44,000 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:44,001 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:44,045 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-22 02:37:44,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-22 02:37:44,110 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:44,111 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:44,152 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-22 02:37:44,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-22 02:37:44,272 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:44,273 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:44,316 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-22 02:37:44,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-22 02:37:44,392 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:44,394 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:44,436 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-22 02:37:44,437 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-22 02:37:44,575 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:44,576 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:44,629 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-22 02:37:44,630 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-22 02:37:44,719 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:44,720 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:44,765 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-22 02:37:44,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-22 02:37:44,915 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:44,916 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:44,960 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-22 02:37:44,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-22 02:37:45,030 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:45,031 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:45,077 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-22 02:37:45,078 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-22 02:37:45,209 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:45,224 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-22 02:37:45,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 45 [2022-11-22 02:37:45,263 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:45,278 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:37:45,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:37:45,357 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:45,370 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:37:45,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:37:45,416 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:45,430 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:37:45,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:37:45,455 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:45,468 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:37:45,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:37:45,520 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:45,533 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-22 02:37:45,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 45 [2022-11-22 02:37:45,577 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:45,591 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:37:45,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:37:45,623 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:45,636 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:37:45,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:37:45,644 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:37:46,614 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '708#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_~m~0#1| 1000) (= |ULTIMATE.start_main_~#C~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#A~0#1.base|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#C~0#1.base|) (+ (* |ULTIMATE.start_main_~k~0#1| 4) (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)) |ULTIMATE.start_main_~#C~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~p~0#1| 4))))) |ULTIMATE.start_main_#t~mem10#1|) (= |ULTIMATE.start_main_#t~mem9#1| (select (select |#memory_int| |ULTIMATE.start_main_~#B~0#1.base|) (+ (* |ULTIMATE.start_main_~k~0#1| 4) (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)) |ULTIMATE.start_main_~#B~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)))))) (= (ite (= (mod |ULTIMATE.start_main_#t~mem10#1| 4294967296) (mod (+ |ULTIMATE.start_main_#t~mem9#1| |ULTIMATE.start_main_#t~mem8#1|) 4294967296)) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start_main_~k~0#1| 0) (= |ULTIMATE.start_main_~p~0#1| 1800) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#A~0#1.base|) (+ (* |ULTIMATE.start_main_~k~0#1| 4) (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)) |ULTIMATE.start_main_~#A~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~p~0#1| 4))))) |ULTIMATE.start_main_#t~mem8#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#B~0#1.base|) (= |ULTIMATE.start_main_~j~0#1| 0) (= |ULTIMATE.start_main_~#B~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#C~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~n~0#1| 1500) (= |#NULL.base| 0))' at error location [2022-11-22 02:37:46,614 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:37:46,615 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 02:37:46,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-11-22 02:37:46,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512108777] [2022-11-22 02:37:46,615 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 02:37:46,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:37:46,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:37:46,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:37:46,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2022-11-22 02:37:46,617 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:37:46,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:37:46,797 INFO L93 Difference]: Finished difference Result 64 states and 89 transitions. [2022-11-22 02:37:46,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 02:37:46,798 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-22 02:37:46,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:37:46,798 INFO L225 Difference]: With dead ends: 64 [2022-11-22 02:37:46,798 INFO L226 Difference]: Without dead ends: 44 [2022-11-22 02:37:46,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 33 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2022-11-22 02:37:46,799 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 51 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:37:46,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 18 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:37:46,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-22 02:37:46,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2022-11-22 02:37:46,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.3333333333333333) internal successors, (48), 36 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:37:46,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2022-11-22 02:37:46,820 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 18 [2022-11-22 02:37:46,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:37:46,820 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2022-11-22 02:37:46,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:37:46,821 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2022-11-22 02:37:46,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-22 02:37:46,822 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:37:46,822 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:37:46,832 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4af5144-454e-463a-a8d4-d82b7c6c538a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-22 02:37:47,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4af5144-454e-463a-a8d4-d82b7c6c538a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:37:47,028 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:37:47,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:37:47,029 INFO L85 PathProgramCache]: Analyzing trace with hash 795485591, now seen corresponding path program 2 times [2022-11-22 02:37:47,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:37:47,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389106563] [2022-11-22 02:37:47,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:37:47,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:37:47,049 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 02:37:47,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1184267454] [2022-11-22 02:37:47,049 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 02:37:47,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:37:47,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4af5144-454e-463a-a8d4-d82b7c6c538a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:37:47,051 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4af5144-454e-463a-a8d4-d82b7c6c538a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:37:47,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4af5144-454e-463a-a8d4-d82b7c6c538a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-22 02:37:47,133 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-22 02:37:47,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:37:47,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-22 02:37:47,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:37:47,199 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-22 02:37:47,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:37:47,242 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-22 02:37:47,242 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:37:47,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389106563] [2022-11-22 02:37:47,243 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 02:37:47,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184267454] [2022-11-22 02:37:47,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184267454] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:37:47,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1902504523] [2022-11-22 02:37:47,246 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-22 02:37:47,246 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:37:47,246 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:37:47,247 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:37:47,247 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:37:47,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:37:47,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:37:47,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:37:47,401 INFO L321 Elim1Store]: treesize reduction 190, result has 19.1 percent of original size [2022-11-22 02:37:47,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 60 treesize of output 93 [2022-11-22 02:37:47,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:37:47,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:37:47,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:37:47,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 18 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 61 [2022-11-22 02:37:47,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:37:47,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:37:47,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 69 [2022-11-22 02:37:47,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:37:47,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:37:47,621 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:47,654 INFO L321 Elim1Store]: treesize reduction 162, result has 16.5 percent of original size [2022-11-22 02:37:47,655 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 480 treesize of output 448 [2022-11-22 02:37:47,775 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:47,789 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:37:47,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:37:47,878 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:47,891 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-22 02:37:47,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 45 [2022-11-22 02:37:47,925 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:47,939 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:37:47,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:37:48,075 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:48,090 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-22 02:37:48,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 45 [2022-11-22 02:37:48,133 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:48,149 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:37:48,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:37:48,192 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:48,208 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:37:48,209 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:37:48,330 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:48,345 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:37:48,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:37:48,394 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:48,409 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:37:48,409 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:37:48,439 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:48,453 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:37:48,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:37:48,536 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:48,537 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:48,579 INFO L321 Elim1Store]: treesize reduction 54, result has 51.4 percent of original size [2022-11-22 02:37:48,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 79 [2022-11-22 02:37:48,644 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:48,645 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:48,682 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-22 02:37:48,682 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-22 02:37:48,829 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:48,830 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:48,882 INFO L321 Elim1Store]: treesize reduction 54, result has 51.4 percent of original size [2022-11-22 02:37:48,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 79 [2022-11-22 02:37:48,957 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:48,958 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:48,999 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-22 02:37:48,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-22 02:37:49,138 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:49,139 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:49,184 INFO L321 Elim1Store]: treesize reduction 54, result has 51.4 percent of original size [2022-11-22 02:37:49,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 79 [2022-11-22 02:37:49,257 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:49,260 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:49,301 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-22 02:37:49,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-22 02:37:49,402 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:49,403 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:49,444 INFO L321 Elim1Store]: treesize reduction 54, result has 51.4 percent of original size [2022-11-22 02:37:49,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 79 [2022-11-22 02:37:49,493 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:49,494 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:49,534 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-22 02:37:49,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-22 02:37:49,663 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:49,664 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:49,702 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-22 02:37:49,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-22 02:37:49,754 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:49,755 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:49,794 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-22 02:37:49,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-22 02:37:49,921 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:49,935 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:37:49,936 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:37:49,960 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:49,973 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:37:49,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:37:50,034 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:50,048 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-22 02:37:50,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 45 [2022-11-22 02:37:50,085 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:50,099 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:37:50,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:37:50,135 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:50,149 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:37:50,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:37:50,217 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:50,231 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-22 02:37:50,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 45 [2022-11-22 02:37:50,271 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:50,286 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:37:50,287 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:37:50,317 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:37:50,331 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:37:50,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:37:50,337 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:37:51,198 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1044#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_~m~0#1| 1000) (= |ULTIMATE.start_main_~#C~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#A~0#1.base|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#C~0#1.base|) (+ (* |ULTIMATE.start_main_~k~0#1| 4) (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)) |ULTIMATE.start_main_~#C~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~p~0#1| 4))))) |ULTIMATE.start_main_#t~mem10#1|) (= |ULTIMATE.start_main_#t~mem9#1| (select (select |#memory_int| |ULTIMATE.start_main_~#B~0#1.base|) (+ (* |ULTIMATE.start_main_~k~0#1| 4) (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)) |ULTIMATE.start_main_~#B~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)))))) (= (ite (= (mod |ULTIMATE.start_main_#t~mem10#1| 4294967296) (mod (+ |ULTIMATE.start_main_#t~mem9#1| |ULTIMATE.start_main_#t~mem8#1|) 4294967296)) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start_main_~k~0#1| 0) (= |ULTIMATE.start_main_~p~0#1| 1800) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#A~0#1.base|) (+ (* |ULTIMATE.start_main_~k~0#1| 4) (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)) |ULTIMATE.start_main_~#A~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~p~0#1| 4))))) |ULTIMATE.start_main_#t~mem8#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#B~0#1.base|) (= |ULTIMATE.start_main_~j~0#1| 0) (= |ULTIMATE.start_main_~#B~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#C~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~n~0#1| 1500) (= |#NULL.base| 0))' at error location [2022-11-22 02:37:51,198 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:37:51,198 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 02:37:51,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-11-22 02:37:51,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626811082] [2022-11-22 02:37:51,199 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 02:37:51,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:37:51,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:37:51,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:37:51,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2022-11-22 02:37:51,200 INFO L87 Difference]: Start difference. First operand 37 states and 48 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:37:51,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:37:51,391 INFO L93 Difference]: Finished difference Result 167 states and 219 transitions. [2022-11-22 02:37:51,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 02:37:51,393 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-22 02:37:51,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:37:51,395 INFO L225 Difference]: With dead ends: 167 [2022-11-22 02:37:51,395 INFO L226 Difference]: Without dead ends: 140 [2022-11-22 02:37:51,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 51 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2022-11-22 02:37:51,396 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 109 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:37:51,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 28 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:37:51,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-11-22 02:37:51,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 85. [2022-11-22 02:37:51,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.2857142857142858) internal successors, (108), 84 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:37:51,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 108 transitions. [2022-11-22 02:37:51,426 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 108 transitions. Word has length 24 [2022-11-22 02:37:51,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:37:51,426 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 108 transitions. [2022-11-22 02:37:51,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:37:51,427 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 108 transitions. [2022-11-22 02:37:51,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-22 02:37:51,428 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:37:51,429 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:37:51,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4af5144-454e-463a-a8d4-d82b7c6c538a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-22 02:37:51,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4af5144-454e-463a-a8d4-d82b7c6c538a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:37:51,635 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:37:51,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:37:51,636 INFO L85 PathProgramCache]: Analyzing trace with hash 2031543819, now seen corresponding path program 3 times [2022-11-22 02:37:51,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:37:51,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622518574] [2022-11-22 02:37:51,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:37:51,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:37:51,688 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 02:37:51,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1197818823] [2022-11-22 02:37:51,689 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 02:37:51,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:37:51,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4af5144-454e-463a-a8d4-d82b7c6c538a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:37:51,690 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4af5144-454e-463a-a8d4-d82b7c6c538a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:37:51,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4af5144-454e-463a-a8d4-d82b7c6c538a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-22 02:49:45,715 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 02:49:45,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:49:45,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-22 02:49:45,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:49:45,953 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 151 proven. 1 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2022-11-22 02:49:45,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:49:46,011 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 122 proven. 30 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2022-11-22 02:49:46,011 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:49:46,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622518574] [2022-11-22 02:49:46,012 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 02:49:46,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197818823] [2022-11-22 02:49:46,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197818823] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:49:46,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [529703592] [2022-11-22 02:49:46,016 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-22 02:49:46,016 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:49:46,016 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:49:46,017 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:49:46,017 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:49:46,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:46,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:46,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:46,190 INFO L321 Elim1Store]: treesize reduction 190, result has 19.1 percent of original size [2022-11-22 02:49:46,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 60 treesize of output 93 [2022-11-22 02:49:46,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:46,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:46,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:46,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 18 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 61 [2022-11-22 02:49:46,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:46,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:46,287 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 69 [2022-11-22 02:49:46,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:46,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:46,425 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:46,462 INFO L321 Elim1Store]: treesize reduction 162, result has 16.5 percent of original size [2022-11-22 02:49:46,462 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 480 treesize of output 448 [2022-11-22 02:49:46,609 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:46,623 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:49:46,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:49:46,714 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:46,728 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-22 02:49:46,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 45 [2022-11-22 02:49:46,763 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:46,778 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:49:46,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:49:46,893 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:46,907 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:49:46,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:49:46,941 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:46,957 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:49:46,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:49:47,026 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:47,043 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-22 02:49:47,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 45 [2022-11-22 02:49:47,087 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:47,101 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:49:47,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:49:47,133 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:47,148 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:49:47,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:49:47,229 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:47,243 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-22 02:49:47,244 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 45 [2022-11-22 02:49:47,293 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:47,321 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:49:47,322 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:49:47,359 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:47,375 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:49:47,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:49:47,439 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:47,454 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-22 02:49:47,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 45 [2022-11-22 02:49:47,506 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:47,522 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:49:47,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:49:47,550 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:47,566 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:49:47,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:49:47,624 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:47,638 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:49:47,638 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:49:47,673 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:47,687 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:49:47,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:49:47,720 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:47,736 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:49:47,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:49:47,796 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:47,797 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:47,846 INFO L321 Elim1Store]: treesize reduction 54, result has 51.4 percent of original size [2022-11-22 02:49:47,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 79 [2022-11-22 02:49:47,901 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:47,902 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:47,945 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-22 02:49:47,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-22 02:49:48,100 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:48,101 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:48,166 INFO L321 Elim1Store]: treesize reduction 54, result has 51.4 percent of original size [2022-11-22 02:49:48,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 79 [2022-11-22 02:49:48,222 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:48,223 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:48,271 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-22 02:49:48,271 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-22 02:49:48,370 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:48,371 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:48,414 INFO L321 Elim1Store]: treesize reduction 54, result has 51.4 percent of original size [2022-11-22 02:49:48,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 79 [2022-11-22 02:49:48,480 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:48,481 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:48,520 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-22 02:49:48,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-22 02:49:48,611 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:48,612 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:48,656 INFO L321 Elim1Store]: treesize reduction 54, result has 51.4 percent of original size [2022-11-22 02:49:48,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 79 [2022-11-22 02:49:48,705 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:48,706 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:48,753 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-22 02:49:48,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-22 02:49:48,884 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:48,885 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:48,928 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-22 02:49:48,928 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-22 02:49:49,002 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:49,003 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:49,045 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-22 02:49:49,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-22 02:49:49,065 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:49:50,133 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1955#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_~m~0#1| 1000) (= |ULTIMATE.start_main_~#C~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#A~0#1.base|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#C~0#1.base|) (+ (* |ULTIMATE.start_main_~k~0#1| 4) (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)) |ULTIMATE.start_main_~#C~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~p~0#1| 4))))) |ULTIMATE.start_main_#t~mem10#1|) (= |ULTIMATE.start_main_#t~mem9#1| (select (select |#memory_int| |ULTIMATE.start_main_~#B~0#1.base|) (+ (* |ULTIMATE.start_main_~k~0#1| 4) (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)) |ULTIMATE.start_main_~#B~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)))))) (= (ite (= (mod |ULTIMATE.start_main_#t~mem10#1| 4294967296) (mod (+ |ULTIMATE.start_main_#t~mem9#1| |ULTIMATE.start_main_#t~mem8#1|) 4294967296)) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start_main_~k~0#1| 0) (= |ULTIMATE.start_main_~p~0#1| 1800) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#A~0#1.base|) (+ (* |ULTIMATE.start_main_~k~0#1| 4) (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)) |ULTIMATE.start_main_~#A~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~p~0#1| 4))))) |ULTIMATE.start_main_#t~mem8#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#B~0#1.base|) (= |ULTIMATE.start_main_~j~0#1| 0) (= |ULTIMATE.start_main_~#B~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#C~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~n~0#1| 1500) (= |#NULL.base| 0))' at error location [2022-11-22 02:49:50,134 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:49:50,134 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 02:49:50,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-11-22 02:49:50,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721580462] [2022-11-22 02:49:50,135 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 02:49:50,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:49:50,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:49:50,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:49:50,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2022-11-22 02:49:50,136 INFO L87 Difference]: Start difference. First operand 85 states and 108 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:50,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:49:50,379 INFO L93 Difference]: Finished difference Result 354 states and 461 transitions. [2022-11-22 02:49:50,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 02:49:50,380 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-11-22 02:49:50,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:49:50,386 INFO L225 Difference]: With dead ends: 354 [2022-11-22 02:49:50,386 INFO L226 Difference]: Without dead ends: 278 [2022-11-22 02:49:50,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 186 SyntacticMatches, 15 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2022-11-22 02:49:50,390 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 160 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:49:50,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 19 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:49:50,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-11-22 02:49:50,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 271. [2022-11-22 02:49:50,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 270 states have (on average 1.2333333333333334) internal successors, (333), 270 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:50,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 333 transitions. [2022-11-22 02:49:50,526 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 333 transitions. Word has length 72 [2022-11-22 02:49:50,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:49:50,527 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 333 transitions. [2022-11-22 02:49:50,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:50,527 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 333 transitions. [2022-11-22 02:49:50,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-11-22 02:49:50,543 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:49:50,543 INFO L195 NwaCegarLoop]: trace histogram [64, 64, 16, 16, 16, 16, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:49:50,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4af5144-454e-463a-a8d4-d82b7c6c538a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-22 02:49:50,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4af5144-454e-463a-a8d4-d82b7c6c538a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-22 02:49:50,747 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:49:50,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:49:50,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1546414407, now seen corresponding path program 4 times [2022-11-22 02:49:50,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:49:50,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143380387] [2022-11-22 02:49:50,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:49:50,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:49:50,853 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 02:49:50,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1515510593] [2022-11-22 02:49:50,853 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-22 02:49:50,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:49:50,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4af5144-454e-463a-a8d4-d82b7c6c538a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:49:50,855 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4af5144-454e-463a-a8d4-d82b7c6c538a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:49:50,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4af5144-454e-463a-a8d4-d82b7c6c538a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-22 02:49:51,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:49:51,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 1647 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-22 02:49:51,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:49:51,504 INFO L134 CoverageAnalysis]: Checked inductivity of 6720 backedges. 398 proven. 10 refuted. 0 times theorem prover too weak. 6312 trivial. 0 not checked. [2022-11-22 02:49:51,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:49:51,583 INFO L134 CoverageAnalysis]: Checked inductivity of 6720 backedges. 398 proven. 10 refuted. 0 times theorem prover too weak. 6312 trivial. 0 not checked. [2022-11-22 02:49:51,584 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:49:51,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143380387] [2022-11-22 02:49:51,584 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 02:49:51,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515510593] [2022-11-22 02:49:51,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515510593] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:49:51,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1271343114] [2022-11-22 02:49:51,587 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-22 02:49:51,587 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:49:51,588 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:49:51,588 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:49:51,588 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:49:51,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:51,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:51,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:51,738 INFO L321 Elim1Store]: treesize reduction 190, result has 19.1 percent of original size [2022-11-22 02:49:51,738 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 60 treesize of output 93 [2022-11-22 02:49:51,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:51,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:51,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:51,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 18 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 61 [2022-11-22 02:49:51,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:51,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:51,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 61 [2022-11-22 02:49:51,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:51,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:51,964 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:51,998 INFO L321 Elim1Store]: treesize reduction 162, result has 16.5 percent of original size [2022-11-22 02:49:51,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 480 treesize of output 448 [2022-11-22 02:49:52,096 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:52,110 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:49:52,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:49:52,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:52,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:52,249 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:52,293 INFO L321 Elim1Store]: treesize reduction 158, result has 18.6 percent of original size [2022-11-22 02:49:52,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 305 treesize of output 285 [2022-11-22 02:49:52,363 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:52,378 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:49:52,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:49:52,446 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:52,460 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:49:52,461 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:49:52,523 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:52,538 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:49:52,539 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:49:52,567 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:52,582 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:49:52,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:49:52,709 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:52,723 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-22 02:49:52,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 45 [2022-11-22 02:49:52,755 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:52,770 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:49:52,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:49:52,849 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:52,866 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:49:52,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:49:52,902 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:52,916 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:49:52,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:49:52,970 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:52,984 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-22 02:49:52,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 45 [2022-11-22 02:49:53,021 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:53,037 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:49:53,038 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:49:53,083 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:53,096 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-22 02:49:53,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 45 [2022-11-22 02:49:53,139 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:53,155 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:49:53,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:49:53,182 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:53,196 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:49:53,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:49:53,274 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:53,288 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:49:53,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:49:53,317 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:53,331 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:49:53,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:49:53,360 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:53,374 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-22 02:49:53,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 45 [2022-11-22 02:49:53,453 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:53,471 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:49:53,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:49:53,498 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:53,512 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:49:53,513 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:49:53,540 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:53,553 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-22 02:49:53,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 45 [2022-11-22 02:49:53,594 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:53,610 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:49:53,611 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:49:53,643 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:53,658 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:49:53,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:49:53,715 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:53,729 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-22 02:49:53,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 45 [2022-11-22 02:49:53,773 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:53,787 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:49:53,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:49:53,833 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:53,850 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-22 02:49:53,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 45 [2022-11-22 02:49:53,893 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:53,909 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:49:53,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:49:53,940 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:53,955 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:49:53,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:49:53,978 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:53,996 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-22 02:49:53,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 45 [2022-11-22 02:49:54,043 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:54,061 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:49:54,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:49:54,096 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:54,113 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 02:49:54,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-22 02:49:54,145 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:54,146 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:54,189 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-22 02:49:54,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-22 02:49:54,241 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:54,242 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:54,289 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-22 02:49:54,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-22 02:49:54,476 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:54,477 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:54,526 INFO L321 Elim1Store]: treesize reduction 54, result has 51.4 percent of original size [2022-11-22 02:49:54,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 79 [2022-11-22 02:49:54,580 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:54,581 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:54,628 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-22 02:49:54,628 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-22 02:49:54,723 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:54,724 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:54,766 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-22 02:49:54,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-22 02:49:54,832 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:54,833 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:54,877 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-22 02:49:54,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-22 02:49:54,995 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:54,996 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:55,040 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-22 02:49:55,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-22 02:49:55,148 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:55,149 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:55,189 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-22 02:49:55,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-22 02:49:55,332 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:55,333 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:55,379 INFO L321 Elim1Store]: treesize reduction 54, result has 51.4 percent of original size [2022-11-22 02:49:55,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 79 [2022-11-22 02:49:55,425 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:55,426 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:55,473 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-22 02:49:55,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-22 02:49:55,495 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:49:56,547 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4470#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_~m~0#1| 1000) (= |ULTIMATE.start_main_~#C~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#A~0#1.base|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#C~0#1.base|) (+ (* |ULTIMATE.start_main_~k~0#1| 4) (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)) |ULTIMATE.start_main_~#C~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~p~0#1| 4))))) |ULTIMATE.start_main_#t~mem10#1|) (= |ULTIMATE.start_main_#t~mem9#1| (select (select |#memory_int| |ULTIMATE.start_main_~#B~0#1.base|) (+ (* |ULTIMATE.start_main_~k~0#1| 4) (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)) |ULTIMATE.start_main_~#B~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)))))) (= (ite (= (mod |ULTIMATE.start_main_#t~mem10#1| 4294967296) (mod (+ |ULTIMATE.start_main_#t~mem9#1| |ULTIMATE.start_main_#t~mem8#1|) 4294967296)) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start_main_~k~0#1| 0) (= |ULTIMATE.start_main_~p~0#1| 1800) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#A~0#1.base|) (+ (* |ULTIMATE.start_main_~k~0#1| 4) (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)) |ULTIMATE.start_main_~#A~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~p~0#1| 4))))) |ULTIMATE.start_main_#t~mem8#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#B~0#1.base|) (= |ULTIMATE.start_main_~j~0#1| 0) (= |ULTIMATE.start_main_~#B~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#C~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~n~0#1| 1500) (= |#NULL.base| 0))' at error location [2022-11-22 02:49:56,547 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:49:56,548 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 02:49:56,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-22 02:49:56,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698315685] [2022-11-22 02:49:56,548 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 02:49:56,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-22 02:49:56,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:49:56,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-22 02:49:56,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=261, Unknown=0, NotChecked=0, Total=420 [2022-11-22 02:49:56,550 INFO L87 Difference]: Start difference. First operand 271 states and 333 transitions. Second operand has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:56,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:49:56,996 INFO L93 Difference]: Finished difference Result 817 states and 1171 transitions. [2022-11-22 02:49:56,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-22 02:49:56,996 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 216 [2022-11-22 02:49:56,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:49:56,999 INFO L225 Difference]: With dead ends: 817 [2022-11-22 02:49:56,999 INFO L226 Difference]: Without dead ends: 554 [2022-11-22 02:49:57,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 600 SyntacticMatches, 27 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 746 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=244, Invalid=406, Unknown=0, NotChecked=0, Total=650 [2022-11-22 02:49:57,002 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 159 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:49:57,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 36 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:49:57,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2022-11-22 02:49:57,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 535. [2022-11-22 02:49:57,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 534 states have (on average 1.1629213483146068) internal successors, (621), 534 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:57,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 621 transitions. [2022-11-22 02:49:57,160 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 621 transitions. Word has length 216 [2022-11-22 02:49:57,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:49:57,161 INFO L495 AbstractCegarLoop]: Abstraction has 535 states and 621 transitions. [2022-11-22 02:49:57,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:57,161 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 621 transitions. [2022-11-22 02:49:57,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2022-11-22 02:49:57,169 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:49:57,169 INFO L195 NwaCegarLoop]: trace histogram [160, 160, 16, 16, 16, 16, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:49:57,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4af5144-454e-463a-a8d4-d82b7c6c538a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-22 02:49:57,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4af5144-454e-463a-a8d4-d82b7c6c538a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-22 02:49:57,379 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:49:57,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:49:57,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1138692935, now seen corresponding path program 5 times [2022-11-22 02:49:57,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:49:57,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542873882] [2022-11-22 02:49:57,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:49:57,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:49:57,583 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 02:49:57,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2131610099] [2022-11-22 02:49:57,583 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 02:49:57,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:49:57,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4af5144-454e-463a-a8d4-d82b7c6c538a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:49:57,585 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4af5144-454e-463a-a8d4-d82b7c6c538a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:49:57,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4af5144-454e-463a-a8d4-d82b7c6c538a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process